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This stereo power amplifier is the industry reference standard for performance—an investment grade musical instrument that brings music to life.
Local pickup or $11 flat rate shipping within Australia
The BHK Signature 250 and 300 power amplifiers are the culmination of one man’s half-century search for perfection in music’s reproduction. Bascom H. King has designed amplifiers for many companies, some selling in excess of $100,000, including: Constellation Audio, Marantz, Infinity, and Conrad Johnson. This is the first amplifier Bascom felt was good enough to lend his name to. It is his finest achievement in a lifetime of work.
- Zero-loss vacuum tube input stage
- Differentially coupled balanced MOSFET output stage
- All through hole construction (no surface mount parts)
- RCA Single ended input
- XLR balanced input
- 250 watts per channel 8Ω Signature
- 500 watts per channel 4Ω Signature
- 2Ω stable Signature 250 stereo
- Less than 0.1% thd 20Hz to 20kHz at rated power
- Damping factor 100 for excellent loudspeaker control
- Front panel standby button for vacuum tube input
- -3dB greater than 200kHz
- Dual, custom, solid copper, gold plated output binding posts
- Fully balanced from input to output
- 83 pounds
- Input 12 volt trigger
- Easy access for tubes
Available in both stereo and mono models, the BHK Signature series is unparalleled in its ability to render details formerly lost in the music. The BHK Signature is a hybrid design enjoying performance benefits from multiple design techniques including, a balanced differential vacuum tube input, balanced differential MOSFET power outputs, and separate, isolated, analog power supplies feeding each.
When it comes to musically controlling and powering loudspeakers, the BHK Signature has no peer. The stereo Signature 250 produces 250 watts/per channel into an eight-Ohm loudspeaker, 500 watts/channel into four-Ohms, and stable into 2-Ohms; enough power to satisfy even the hungriest of loads.
The Mono Signature 300 doubles the output current with half the impedance of the stereo model. Each Mono Signature produces 300 watts into an eight-Ohm loudspeaker, 600 watts into four-Ohms, and 1000 watts into 2-Ohms. But more than just doubling the current, the BHK Signature 300 also doubles every internal component of the 250 into one: double tubes, double power supplies, transistors, capacitors and resistors. The results are hard to put into words. The BHK Signature 300 is a clear step above the stereo 250, on the order of 20% better, though both have the same character of sound. Both the Stereo 250 and Mono 300 are one of the best performing, musical sounding amplifiers ever made. Imagine your delight listening to either.
1KHz, 1W/8Ω <0.01% 20-20KHz, 1W/8Ω <0.1% 1KHz, 200W/8Ω < 0.1% (120VAC Mains input) 1KHz, 400W/4Ω < 0.1% (120VAC Mains input)
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At Len Wallis Audio, whether you’re purchasing in store, over the phone or online through our ecommerce store, we want you to be completely satisfied with your purchase.
Our Refund, Return and Repairs Policy is here to clarify any concerns or questions you might have prior to you making a purchase from us. This way you can be sure of our policy on refunds, returns and repairs and your rights under the Australian Consumer Law.
We also recommend you immediately inspect any goods that you receive from us to ensure you are completely satisfied with the goods, including that the goods are of acceptable quality, and match the description we have provided to you.
If you have any questions about this policy, please contact us at firstname.lastname@example.org or 02 9427 6755
We require a receipt or proof of purchase.
- Please do not send your purchase back to the original manufacturer.
- There are certain situations where only partial refunds are granted (if applicable). For example:
- Any item not in its original condition, is damaged or missing parts for reasons not due to our error
- Any item that is returned for reason of change of mind more than 14 days after delivery or purchase from the store.
Consumer Guarantees and Your Rights under the Australian Consumer Law
Refer to our page for more information.
Goods Damaged in Transit.
If any goods arrive damaged, please contact us as soon as possible. Len Wallis Audio will arrange to have the damaged goods returned and either arrange for a replacement of the goods or refund the price to you. Damaged goods must be returned in the condition received by you with all original packaging, accessories and/or manuals.
Refunds will be normally be processed within five (5) days.
Where Len Wallis Audio considers the goods to have breached a consumer guarantee, any shipping costs to return the goods to Len Wallis Audio will be at our cost.
Returns and Repairs.
You may visit Len Wallis Audio and a staff member will assist you with any return or repair. This may include inspecting the goods, arranging for the goods to be repaired, or providing you with a replacement.
Goods must be returned within a reasonable time.
If any goods cannot be easily returned to us due to their size, the fault or because they have been affixed or installed in your premises, please contact us and we will arrange an inspection to assess the goods.
Goods returned for repair will be assessed and/or repaired within a reasonable time. You may be provided with an indicative repair time, which time may vary due to reasons beyond ours or the repairer’s reasonable control, such as part availability and incorrect fault description.
You may be required to pay labour, assessment and/or freight fees, such as where goods are assessed to have been damaged by misuse or accident, or where your rights under the Australian Consumer Law or any manufacturer’s warranty do not apply. We may provide you with an indicative fee, which may vary due to reasons beyond our control.
If any goods that you return are capable of retaining user generated data such as files stored on a hard drive, and songs stored on a portable media player, the replacement or repair of the goods may result in loss of the data. In these circumstances, we recommend you back up data to prevent data loss, and remove sensitive or confidential data, as a party assessing and/or repairing your goods may be required to view data in the course of carrying out the assessment. We will not be responsible for any data loss.
In some circumstances, goods presented for repair may be replaced by refurbished goods of the same type rather than being repaired. Refurbished parts may be used to repair the goods.
Where you have any questions or concerns relating to your Order, please immediately contact us
We understand that sometimes you may simply change your mind about a purchase or have made a wrong selection. In these situations, you have 14 days in which to return your item for a refund, exchange or store credit. If more than 14 days has passed since your purchase we can’t offer you a refund, exchange or store credit.
To be eligible for a return, refund or store credit your item must be in the same condition that you received it. Which is to say, it must be in the original unopened packaging, and in ‘brand new’ saleable condition.
Please note that current Australian Consumer Law does not require us to offer a ‘Change of Mind’ refund. Rather Len Wallis Audio offers 14 day ‘Change of Mind Policy’ in good faith. For more information on consumer rights and guarantees, please visit the Australian Competition and Consumer Commission web site.
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